We have: a quiet morning, drops of dew coating the trees ("furze" is a type of tree), "silvery gossamers" (which are probably spiderwebs that are highlighted with dew and sunlight), and ocean waves that are now calm.

What about sound here? Well, pay a short visit to "Sound Check" for some info on how consonance and assonance are working here. (Hint: they produce a lulling sound, which emphasizes, well...calm.)

You should also notice the reference to "leaves that redden to the fall" in line 254. This is a reference to time passing, but so far we don't have a solid hook to hang this on, temporally speaking.